Armature.



R. H. PYLE.

ARMATURE.

APPLICATION FILED 11111.11, 1912.

1,069,902. Patented Aug. 12, 1913.

l/[TNESSES: NVENTOR //m Robepfli. 13j/e.

m w MW@ l keyed UNITED sTATEs PATENT oEEroE.

ROBERT H. PYLE, OF INDIANAPOLIS, INDIANA, ASSIGNOB T0 THE REMY ELECTRIC 'COMPANY, OF'ANDERSON, INDIANA, A CORPQRATION.

ARMATURE.

Specification of Letters Patent.

PatentedAug.-12,1913.

Applcation filed January 11, 1912. Serial No. 670,703.

To all whom t may concern.'

Be it known that I, ROBERT H. PYLE, a citizen of the United States, and a residentof Indianapolis, county of Marion, and State of Indiana, have invented a certain useful Armature; and I do hereby declare that the following is a full, clear, andexactdescription thereof, reference being had to the accompanying drawings.

The object of this invention is to provide an armature of improved construction by which movement of the armature longitudinally of the shaft is prevented.

The features of the invention lie in providing clamping means for holding the laminated core having radially extending fingers embracing the laminations and body portions adapted to be slipped into place upony a sleeve surrounding the armature shaft and secured by a spring ringfin such a manner as to prevent any movement of the armature lamination longitudinally of the sleeve.

The nature of the invention will be understood from the accompanying drawings and the following description and claims.

In the drawings, Figure 1 is a longitudi* nal section midway of the device. Fig. 2 is a transverse section on the line 2-2 of Fig. 1. Fig. 3 is a detail of the snap ring. Fig. 4 is a side elevation of one of the lamination clamps.

In detail there is shown in the drawings an armature shaft 10 having a reduced end portion 11 and with a sleeve 12 surrounding said reduced portion and said shaft 10 and to said shaftby the key 13. The sleeve 12 surrounding the shaft 10 has four pairs of project'ng ears 14 near each end of the winding 15 and spaced apart subst-an,- tially ninety degrees and the ears of one set are in alinement with those of` the other set. The ears'of each pair are spaced apart to permit the lamination clamps 16 to be. slid longitudinally of the sleeve 12. The ears to the left as seen in Fig. 1, have a V-.shaped groove 18 cut in them concentric with the shaft 10.

The lamination clamps 16 are channelshaped having fingers 19 projecting from the body portion 2O which is insertible between the ears 14 on the sleeve 12. An extension 21 from the body portion has a groove 22 cut on the side remote from the sleeve 12 and adapted to mate with the groove 18 in the ears 14 as hereafter described. There are fourof these clamps here shown equally spaced about the sleeve 12. n

The core of the armature may be of any desired construction, that here shown being of thin annular plates 17 or laminations of soft steel separated by some insulating material, not shown. The periphery of the laminations may be slotted in the usual manner to receive the winding. These an nular laminations 17 are pressed tightly together between thinannular plates 23, preferably of aluminum and held between the fingers 19 of the clamps 16. The armature windings 15 are neXt put on after which the body portions 20 of the clamps are inserted between the ears 14 and slipped into place on the sleeve 12 with the groove 22 mating with the groove 18 in the ears 14. A ring 24 is then sprung into said grooves and the armature 1s locked against longitudinal movement on the sleeve 12.

The commutator 25 is slipped over a reduced portion 26 of the sleeve 12 surrounding the reduced portion 11 of the shaft 10. One end of the cmmutator is secured by an annular projection 27 from the sleeve 12, V-shaped in cross section, extending over the reduced portion 26 of said sleeve and mating with a conical projection 28 from the commutator. There is a groove 29 in the other end of the commutator. 25 and a ring 30 closely fitting said groove is slipped over the endof the sleeve 26 and is pressed inward against the commutatorby the nut -31 on the threaded end of the sleeve 26.

The armature windings 15 may be connected to the segments of the commutator 25 in any desired manner, not shown.

Thespring ring 24, for holding the clamps 16 'within the ears 14, may be of any desired form, although here shown as being of one piece cut at one point and circular' in cross section. The coating or other treatment given the armature windings 15 is immaterial for this invention.

I claim as my invention:

1. An armature including a shaft, a sleeve on said shaft, a -pair of projections spaced apart thereon and having a groove therein, an annular laminated core surrounding said sleeve, clamping 'means for said laminated core having a body portion lying between said sleeve and said core and adapted to be I -slid between said projections on. said sleeve,

said body portion'having a groove therein adaptedto register With the groove in said sleeve project1ons,`a radially extending iinger near each end of said body portion and embracing the ends of saldy core, and -a spring ring surrounding said sleeve and lying in the groove in said body portion and invsaid sleeve projections for Securing said clamp on said sleeve.

' 2. An armature including a shaft, a sleeve keyed on saidshaft, a plurality of projections thereon arranged in pairs and spaced apart and having a groovetherein, an annular laminated core surrounding said sleeve, a plurality 0i" clamping means for said core, each havingla body portion between 'said core and said sleeve and adapt. ed to be slid between said pairs of sleeve projections, la radially extending finger near each end of said body portions and embracing the ends of4 said core, and a spring ring lying in said grooves in said sleeve projections and said clamp body portions `for holding said clamps on said sleeve.

3. ,An amature including a shaft, a sleeve keyed on said shaft, an annular laminated core surrounding said sleeve, a plurality of projections on said sleeve adjacent each end of said core and. arranged in pairs and spaced apart, each ofv said projections adjacent the end of said core having a groove therein, a plurality of clamping means for said core, each having a body portion between said core and said sleeve and adapted to be slid between said `pairs of sleeve projections at each'end of said core, an ex- `tension fromisaid body-.portion having 'a groove therein andadapted toiregister with the grooves in said projections, and a spring ring lying 1n' said grooves in said sleeve projections and said clamp body portions for holding said clamps-on said sleeve.

In witness whereof, I have 'hereunto aliixed my signature in the presence of the witnesses herein named.

j ROBERT H. PYLE.. Witnesses:

RANDALL l'. VAN WINKLE, VILLIAM R. POLAND. 

